Rockford told Beamer he had a full set of teeth, but on "The Kirkoff Case" we saw him pick a tooth up off the ground after getting beat on.
When Beemer was recklessly driving Rockford's car during the opening sequence a stunt driver was used, as he was wearing no glasses.
At the 24 minute mark, the phone seen in the bar had the same number as Rockford's 311-555-2368.
At the end of the car chase sequence, in the shot where Beamer is shown in a state of shock in the back of the car, camera equipment is plainly visible on the seat next to him.